Java/Collections Data Structure/Deque

Create a Stack and Queue using ArrayDeque.

   <source lang="java">

import java.util.ArrayDeque; import java.util.Deque; public class Main {

 public static void main(String args[]) {
   Deque<String> stack = new ArrayDeque<String>();
   Deque<String> queue = new ArrayDeque<String>();
   stack.push("A");
   stack.push("B");
   stack.push("C");
   stack.push("D");
   while (!stack.isEmpty())
     System.out.print(stack.pop() + " ");
   queue.add("A");
   queue.add("B");
   queue.add("C");
   queue.add("D");
   while (!queue.isEmpty())
     System.out.print(queue.remove() + " ");
 }

}

 </source>